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[Commit-gnuradio] [gnuradio] 01/01: gr-dtv: Update example flow graphs t


From: git
Subject: [Commit-gnuradio] [gnuradio] 01/01: gr-dtv: Update example flow graphs to Qt.
Date: Tue, 6 Sep 2016 19:02:44 +0000 (UTC)

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jcorgan pushed a commit to branch master
in repository gnuradio.

commit f190f6a26e332fb8b558602fc7e5d79a50d4f851
Author: Ron Economos <address@hidden>
Date:   Tue Sep 6 08:47:21 2016 -0700

    gr-dtv: Update example flow graphs to Qt.
---
 gr-dtv/examples/README.dvbs       |    8 -
 gr-dtv/examples/catv_tx_64qam.grc | 1356 +++++++++++++++++++++++++++++---
 gr-dtv/examples/dvbs2_tx.grc      |  629 ++++++++++++---
 gr-dtv/examples/dvbs_tx.grc       |  792 ++++++++++++-------
 gr-dtv/examples/dvbt_rx_8k.grc    |  625 ++++++++++++++-
 gr-dtv/examples/dvbt_tx_2k.grc    | 1571 +++++++++++++++++++++++++++++++++----
 gr-dtv/examples/dvbt_tx_8k.grc    | 1571 +++++++++++++++++++++++++++++++++----
 gr-dtv/examples/uhd_atsc_tx.grc   |    8 +-
 gr-dtv/examples/vv003-cr23.grc    |   33 +-
 gr-dtv/examples/vv009-4kfft.grc   |   33 +-
 gr-dtv/examples/vv018-miso.grc    |   33 +-
 11 files changed, 5752 insertions(+), 907 deletions(-)

diff --git a/gr-dtv/examples/README.dvbs b/gr-dtv/examples/README.dvbs
index d9097c4..b9bab29 100644
--- a/gr-dtv/examples/README.dvbs
+++ b/gr-dtv/examples/README.dvbs
@@ -1,11 +1,3 @@
-Puncturing values for DVB-S code rates:
-
-1/2 code rate = Puncture Size = 2, Puncture Pattern = 0b11
-2/3 code rate = Puncture Size = 4, Puncture Pattern = 0b1101
-3/4 code rate = Puncture Size = 6, Puncture Pattern = 0b110110
-5/6 code rate = Puncture Size = 10, Puncture Pattern = 0b1101100110
-7/8 code rate = Puncture Size = 14, Puncture Pattern = 0b11010101100110
-
 A test Transport Stream for the example flow graph
 (8 Msyms/s and 7/8 code rate) is available here:
 
diff --git a/gr-dtv/examples/catv_tx_64qam.grc 
b/gr-dtv/examples/catv_tx_64qam.grc
index 964ef84..0a59580 100644
--- a/gr-dtv/examples/catv_tx_64qam.grc
+++ b/gr-dtv/examples/catv_tx_64qam.grc
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<?grc format='1' created='3.7.10'?>
+<?grc format='1' created='3.7.11'?>
 <flow_graph>
   <timestamp>Thu Feb 20 21:02:41 2014</timestamp>
   <block>
@@ -30,7 +30,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <value>(8, 12)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -38,7 +38,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>wx_gui</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>hier_block_src_path</key>
@@ -93,7 +93,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 299)</value>
+      <value>(8, 268)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -120,7 +120,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 371)</value>
+      <value>(8, 332)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -147,7 +147,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 443)</value>
+      <value>(8, 396)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -174,7 +174,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 155)</value>
+      <value>(8, 140)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -186,7 +186,7 @@
     </param>
     <param>
       <key>value</key>
-      <value>429000000</value>
+      <value>429e6</value>
     </param>
   </block>
   <block>
@@ -201,7 +201,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 227)</value>
+      <value>(8, 204)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -228,7 +228,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 83)</value>
+      <value>(8, 76)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -244,93 +244,156 @@
     </param>
   </block>
   <block>
-    <key>variable_slider</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>converver</key>
-      <value>int_converter</value>
-    </param>
-    <param>
       <key>value</key>
-      <value>-8</value>
+      <value>50</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(312, 11)</value>
+      <value>(544, 16)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>grid_pos</key>
+      <key>id</key>
+      <value>tx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>89</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>-8</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(296, 16)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>id</key>
       <value>vga1_gain</value>
     </param>
     <param>
       <key>label</key>
-      <value>VGA1 Gain</value>
+      <value></value>
     </param>
     <param>
-      <key>max</key>
-      <value>-4</value>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>min</key>
+      <key>start</key>
       <value>-35</value>
     </param>
     <param>
-      <key>notebook</key>
-      <value></value>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>-4</value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>31</value>
+      <key>rangeType</key>
+      <value>int</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_HORIZONTAL</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>variable_slider</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>converver</key>
-      <value>int_converter</value>
-    </param>
-    <param>
       <key>value</key>
       <value>10</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(448, 11)</value>
+      <value>(416, 16)</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
       <key>id</key>
@@ -338,27 +401,35 @@
     </param>
     <param>
       <key>label</key>
-      <value>VGA2 Gain</value>
+      <value></value>
     </param>
     <param>
-      <key>max</key>
-      <value>25</value>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>min</key>
+      <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>notebook</key>
-      <value></value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>num_steps</key>
+      <key>stop</key>
       <value>25</value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_HORIZONTAL</value>
+      <key>rangeType</key>
+      <value>int</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
@@ -385,7 +456,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(128, 163)</value>
+      <value>(144, 148)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -444,7 +515,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(624, 163)</value>
+      <value>(640, 148)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -491,7 +562,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(536, 251)</value>
+      <value>(536, 244)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -546,7 +617,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(584, 347)</value>
+      <value>(624, 340)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -585,7 +656,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(424, 353)</value>
+      <value>(440, 344)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -624,7 +695,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(848, 177)</value>
+      <value>(880, 160)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -663,7 +734,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(360, 177)</value>
+      <value>(376, 160)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -702,7 +773,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(800, 353)</value>
+      <value>(176, 504)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -732,8 +803,16 @@
       <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>C_OTHER</value>
+      <key>rate1</key>
+      <value>C1_4</value>
+    </param>
+    <param>
+      <key>rate2</key>
+      <value>C1_5_MEDIUM</value>
+    </param>
+    <param>
+      <key>rate3</key>
+      <value>C1_4</value>
     </param>
     <param>
       <key>comment</key>
@@ -757,7 +836,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(400, 499)</value>
+      <value>(376, 492)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -804,7 +883,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(168, 339)</value>
+      <value>(176, 332)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -851,7 +930,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(712, 507)</value>
+      <value>(664, 484)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1802,11 +1881,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1056, 467)</value>
+      <value>(1072, 452)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1902,135 +1981,1154 @@
     </param>
   </block>
   <block>
-    <key>wxgui_fftsink2</key>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>avg_alpha</key>
-      <value>0.1333</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>average</key>
+      <value>0.2</value>
+    </param>
+    <param>
+      <key>axislabels</key>
       <value>True</value>
     </param>
     <param>
-      <key>baseband_freq</key>
-      <value>center_freq</value>
+      <key>bw</key>
+      <value>samp_rate</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>fc</key>
+      <value>center_freq</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>True</value>
     </param>
     <param>
-      <key>fft_size</key>
+      <key>fftsize</key>
       <value>1024</value>
     </param>
     <param>
-      <key>freqvar</key>
-      <value>None</value>
+      <key>_coordinate</key>
+      <value>(880, 284)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1056, 203)</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value></value>
+      <key>grid</key>
+      <value>True</value>
     </param>
     <param>
       <key>id</key>
-      <value>wxgui_fftsink2_0_0</value>
+      <value>qtgui_freq_sink_x_0</value>
+    </param>
+    <param>
+      <key>legend</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>notebook</key>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>peak_hold</key>
-      <value>False</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ref_level</key>
-      <value>-10</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ref_scale</key>
-      <value>2.0</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>fft_rate</key>
-      <value>15</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>title</key>
-      <value>FFT Plot</value>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>win_size</key>
-      <value>640,480</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>win</key>
-      <value>None</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>y_divs</key>
-      <value>10</value>
+      <key>label</key>
+      <value>Relative Gain</value>
     </param>
     <param>
-      <key>y_per_div</key>
+      <key>ymax</key>
       <value>10</value>
     </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+    <param>
+      <key>units</key>
+      <value>dB</value>
+    </param>
   </block>
-  <connection>
-    <source_block_id>blocks_file_source_0</source_block_id>
-    <sink_block_id>dtv_catv_transport_framing_enc_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_packed_to_unpacked_xx_0</source_block_id>
-    <sink_block_id>dtv_catv_reed_solomon_enc_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_stream_to_vector_0</source_block_id>
-    <sink_block_id>dtv_dvbt_convolutional_interleaver_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>dtv_catv_frame_sync_enc_bb_0</source_block_id>
-    <sink_block_id>dtv_catv_trellis_enc_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>dtv_catv_randomizer_bb_0</source_block_id>
-    <sink_block_id>dtv_catv_frame_sync_enc_bb_0</sink_block_id>
+  <block>
+    <key>uhd_usrp_sink</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ant0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw0</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq0</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>norm_gain0</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain0</key>
+      <value>tx_gain</value>
+    </param>
+    <param>
+      <key>ant10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain10</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant11</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant12</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant13</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant14</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant15</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant16</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant17</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain17</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant18</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain18</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant19</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain19</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain1</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant20</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain20</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant21</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant22</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain22</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant23</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain23</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant24</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain24</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant25</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain25</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant26</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain26</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant27</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain27</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant28</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain28</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant29</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain29</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain2</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant30</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain30</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant31</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain31</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain3</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain4</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain5</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain6</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain7</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain8</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain9</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>clock_rate</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dev_addr</key>
+      <value>"send_frame_size=65536,num_send_frames=128,master_clock_rate=" + 
str(samp_rate*4)</value>
+    </param>
+    <param>
+      <key>dev_args</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1072, 336)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>uhd_usrp_sink_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>fc32</value>
+    </param>
+    <param>
+      <key>clock_source0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>nchan</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>num_mboards</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>hide_cmd_port</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>hide_lo_controls</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>stream_args</key>
+      <value></value>
+    </param>
+    <param>
+      <key>stream_chans</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>sync</key>
+      <value></value>
+    </param>
+    <param>
+      <key>len_tag_name</key>
+      <value></value>
+    </param>
+    <param>
+      <key>otw</key>
+      <value></value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>blocks_file_source_0</source_block_id>
+    <sink_block_id>dtv_catv_transport_framing_enc_bb_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_packed_to_unpacked_xx_0</source_block_id>
+    <sink_block_id>dtv_catv_reed_solomon_enc_bb_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_stream_to_vector_0</source_block_id>
+    <sink_block_id>dtv_dvbt_convolutional_interleaver_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>dtv_catv_frame_sync_enc_bb_0</source_block_id>
+    <sink_block_id>dtv_catv_trellis_enc_bb_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>dtv_catv_randomizer_bb_0</source_block_id>
+    <sink_block_id>dtv_catv_frame_sync_enc_bb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -2072,7 +3170,13 @@
   </connection>
   <connection>
     <source_block_id>fft_filter_xxx_0</source_block_id>
-    <sink_block_id>wxgui_fftsink2_0_0</sink_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>fft_filter_xxx_0</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-dtv/examples/dvbs2_tx.grc b/gr-dtv/examples/dvbs2_tx.grc
index 99c797d..a26981a 100644
--- a/gr-dtv/examples/dvbs2_tx.grc
+++ b/gr-dtv/examples/dvbs2_tx.grc
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<?grc format='1' created='3.7.10'?>
+<?grc format='1' created='3.7.11'?>
 <flow_graph>
   <timestamp>Wed Sep  3 03:03:39 2014</timestamp>
   <block>
@@ -38,7 +38,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>wx_gui</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>hier_block_src_path</key>
@@ -101,7 +101,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>frequency</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>value</key>
@@ -217,6 +217,195 @@
     </param>
   </block>
   <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>50</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(240, 480)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>89</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>-8</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 480)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>vga1_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>-35</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>-4</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>int</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(120, 480)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>vga2_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>25</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>int</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
     <key>blocks_file_sink</key>
     <param>
       <key>append</key>
@@ -244,7 +433,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(776, 548)</value>
+      <value>(776, 508)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -670,7 +859,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(184, 220)</value>
+      <value>(184, 172)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -733,7 +922,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(448, 216)</value>
+      <value>(448, 168)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -792,7 +981,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(184, 432)</value>
+      <value>(184, 320)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -843,7 +1032,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(464, 444)</value>
+      <value>(464, 332)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -890,7 +1079,7 @@
     </param>
     <param>
       <key>bb_gain0</key>
-      <value>-10</value>
+      <value>vga1_gain</value>
     </param>
     <param>
       <key>bw0</key>
@@ -902,7 +1091,7 @@
     </param>
     <param>
       <key>freq0</key>
-      <value>frequency</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>if_gain0</key>
@@ -910,7 +1099,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>15</value>
+      <value>vga2_gain</value>
     </param>
     <param>
       <key>ant10</key>
@@ -1794,7 +1983,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -1894,6 +2083,305 @@
     </param>
   </block>
   <block>
+    <key>qtgui_freq_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>average</key>
+      <value>0.2</value>
+    </param>
+    <param>
+      <key>axislabels</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>bw</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>fc</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>fftsize</key>
+      <value>1024</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(776, 204)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>grid</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
+    </param>
+    <param>
+      <key>legend</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"dark blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Relative Gain</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+    <param>
+      <key>units</key>
+      <value>dB</value>
+    </param>
+  </block>
+  <block>
     <key>uhd_usrp_sink</key>
     <param>
       <key>alias</key>
@@ -1909,7 +2397,7 @@
     </param>
     <param>
       <key>center_freq0</key>
-      <value>uhd.tune_request(frequency, ((symbol_rate * (1 + rolloff)) / 2 ) 
+ 1e5)</value>
+      <value>uhd.tune_request(center_freq, ((symbol_rate * (1 + rolloff)) / 2 
) + 1e5)</value>
     </param>
     <param>
       <key>norm_gain0</key>
@@ -1917,7 +2405,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>60</value>
+      <value>tx_gain</value>
     </param>
     <param>
       <key>ant10</key>
@@ -2553,7 +3041,7 @@
     </param>
     <param>
       <key>dev_addr</key>
-      <value>"send_frame_size=65536,num_send_frames=256,master_clock_rate=" + 
str(samp_rate*2)</value>
+      <value>"send_frame_size=65536,num_send_frames=256,master_clock_rate=" + 
str(samp_rate*4)</value>
     </param>
     <param>
       <key>dev_args</key>
@@ -2561,11 +3049,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1048, 416)</value>
+      <value>(1048, 408)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2716,109 +3204,6 @@
       <value></value>
     </param>
   </block>
-  <block>
-    <key>wxgui_fftsink2</key>
-    <param>
-      <key>avg_alpha</key>
-      <value>0.13333</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>baseband_freq</key>
-      <value>frequency</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>fft_size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>freqvar</key>
-      <value>None</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(776, 196)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid_pos</key>
-      <value></value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>wxgui_fftsink2_0</value>
-    </param>
-    <param>
-      <key>notebook</key>
-      <value></value>
-    </param>
-    <param>
-      <key>peak_hold</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ref_level</key>
-      <value>-20</value>
-    </param>
-    <param>
-      <key>ref_scale</key>
-      <value>2.0</value>
-    </param>
-    <param>
-      <key>fft_rate</key>
-      <value>15</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
-    </param>
-    <param>
-      <key>title</key>
-      <value>FFT Plot</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>win_size</key>
-      <value>800,600</value>
-    </param>
-    <param>
-      <key>win</key>
-      <value>None</value>
-    </param>
-    <param>
-      <key>y_divs</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>y_per_div</key>
-      <value>10</value>
-    </param>
-  </block>
   <connection>
     <source_block_id>blocks_file_source_0</source_block_id>
     <sink_block_id>dtv_dvb_bbheader_bb_0</sink_block_id>
@@ -2881,13 +3266,13 @@
   </connection>
   <connection>
     <source_block_id>fft_filter_xxx_0</source_block_id>
-    <sink_block_id>uhd_usrp_sink_0_0</sink_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>fft_filter_xxx_0</source_block_id>
-    <sink_block_id>wxgui_fftsink2_0</sink_block_id>
+    <sink_block_id>uhd_usrp_sink_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-dtv/examples/dvbs_tx.grc b/gr-dtv/examples/dvbs_tx.grc
index c9dd98a..b5e94b5 100644
--- a/gr-dtv/examples/dvbs_tx.grc
+++ b/gr-dtv/examples/dvbs_tx.grc
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<?grc format='1' created='3.7.10'?>
+<?grc format='1' created='3.7.11'?>
 <flow_graph>
   <timestamp>Wed Jun 18 01:23:58 2014</timestamp>
   <block>
@@ -30,7 +30,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <value>(8, 12)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -38,7 +38,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>wx_gui</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>hier_block_src_path</key>
@@ -93,7 +93,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 203)</value>
+      <value>(8, 204)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -101,7 +101,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>frequency</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>value</key>
@@ -120,7 +120,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 267)</value>
+      <value>(8, 268)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -147,7 +147,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 75)</value>
+      <value>(8, 76)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -174,7 +174,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(8, 139)</value>
+      <value>(8, 140)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -190,34 +190,89 @@
     </param>
   </block>
   <block>
-    <key>blocks_file_sink</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>append</key>
-      <value>False</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>value</key>
+      <value>50</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(240, 480)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>file</key>
-      <value>adv.bin</value>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>89</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>-8</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(848, 507)</value>
+      <value>(8, 480)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
@@ -225,46 +280,62 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_file_sink_0</value>
+      <value>vga1_gain</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>label</key>
+      <value></value>
     </param>
     <param>
-      <key>unbuffered</key>
-      <value>False</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>-35</value>
+    </param>
+    <param>
+      <key>step</key>
       <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_file_source</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>stop</key>
+      <value>-4</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>int</value>
     </param>
     <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>value</key>
+      <value>10</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>file</key>
-      <value>/run/shm/advdvbs78.ts</value>
+      <key>_coordinate</key>
+      <value>(120, 480)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(184, 59)</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
@@ -272,31 +343,47 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_file_source_0</value>
+      <value>vga2_gain</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>label</key>
+      <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>repeat</key>
-      <value>True</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>step</key>
       <value>1</value>
     </param>
+    <param>
+      <key>stop</key>
+      <value>25</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>int</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
   </block>
   <block>
-    <key>blocks_pack_k_bits_bb</key>
+    <key>blocks_file_sink</key>
+    <param>
+      <key>append</key>
+      <value>False</value>
+    </param>
     <param>
       <key>alias</key>
       <value></value>
@@ -311,11 +398,15 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>0</value>
+    </param>
+    <param>
+      <key>file</key>
+      <value>adv.cfile</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(176, 451)</value>
+      <value>(864, 484)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -323,27 +414,23 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_pack_k_bits_bb_0</value>
+      <value>blocks_file_sink_0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>2</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>unbuffered</key>
+      <value>False</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
   </block>
   <block>
-    <key>blocks_packed_to_unpacked_xx</key>
-    <param>
-      <key>bits_per_chunk</key>
-      <value>1</value>
-    </param>
+    <key>blocks_file_source</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -358,15 +445,15 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>True</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>file</key>
+      <value>/run/shm/advdvbs78.ts</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1080, 59)</value>
+      <value>(208, 52)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -374,7 +461,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_packed_to_unpacked_xx_0</value>
+      <value>blocks_file_source_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -385,16 +472,20 @@
       <value>0</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>type</key>
       <value>byte</value>
     </param>
+    <param>
+      <key>repeat</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
   </block>
   <block>
-    <key>blocks_unpack_k_bits_bb</key>
+    <key>blocks_vector_to_stream</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -409,11 +500,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(408, 235)</value>
+      <value>(568, 228)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -421,11 +512,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_unpack_k_bits_bb_0</value>
+      <value>blocks_vector_to_stream_0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>2</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -435,6 +526,14 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>num_items</key>
+      <value>1512</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
   </block>
   <block>
     <key>dtv_dvbs2_modulator_bc</key>
@@ -447,8 +546,16 @@
       <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>C_OTHER</value>
+      <key>rate1</key>
+      <value>C1_4</value>
+    </param>
+    <param>
+      <key>rate2</key>
+      <value>C1_5_MEDIUM</value>
+    </param>
+    <param>
+      <key>rate3</key>
+      <value>C1_4</value>
     </param>
     <param>
       <key>comment</key>
@@ -472,7 +579,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(352, 427)</value>
+      <value>(248, 376)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -519,7 +626,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(832, 51)</value>
+      <value>(952, 44)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -566,7 +673,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(408, 73)</value>
+      <value>(456, 64)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -586,46 +693,50 @@
     </param>
   </block>
   <block>
-    <key>dtv_dvbt_reed_solomon_enc</key>
+    <key>dtv_dvbt_inner_coder</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>blocks</key>
-      <value>8</value>
+      <key>code_rate</key>
+      <value>C7_8</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>constellation</key>
+      <value>qpsk</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>gfpoly</key>
-      <value>0x11d</value>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(600, 19)</value>
+      <value>(248, 208)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>hierarchy</key>
+      <value>nh</value>
+    </param>
+    <param>
       <key>id</key>
-      <value>dtv_dvbt_reed_solomon_enc_0</value>
+      <value>dtv_dvbt_inner_coder_0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>239</value>
+      <key>ninput</key>
+      <value>1</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -636,33 +747,21 @@
       <value>0</value>
     </param>
     <param>
-      <key>n</key>
-      <value>255</value>
-    </param>
-    <param>
-      <key>s</key>
-      <value>51</value>
-    </param>
-    <param>
-      <key>m</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>p</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>t</key>
-      <value>8</value>
+      <key>noutput</key>
+      <value>1512</value>
     </param>
   </block>
   <block>
-    <key>fec_puncture_xx</key>
+    <key>dtv_dvbt_reed_solomon_enc</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>blocks</key>
+      <value>8</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -671,16 +770,16 @@
       <value></value>
     </param>
     <param>
-      <key>delay</key>
-      <value>0</value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>1</value>
     </param>
     <param>
+      <key>gfpoly</key>
+      <value>0x11d</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(600, 219)</value>
+      <value>(680, 16)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -688,7 +787,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>fec_puncture_xx_0</value>
+      <value>dtv_dvbt_reed_solomon_enc_0</value>
+    </param>
+    <param>
+      <key>k</key>
+      <value>239</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -699,16 +802,24 @@
       <value>0</value>
     </param>
     <param>
-      <key>puncpat</key>
-      <value>0b11010101100110</value>
+      <key>n</key>
+      <value>255</value>
     </param>
     <param>
-      <key>puncsize</key>
-      <value>14</value>
+      <key>s</key>
+      <value>51</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>m</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>p</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>t</key>
+      <value>8</value>
     </param>
   </block>
   <block>
@@ -731,11 +842,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(584, 435)</value>
+      <value>(496, 380)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -782,7 +893,7 @@
     </param>
     <param>
       <key>bb_gain0</key>
-      <value>-10</value>
+      <value>vga1_gain</value>
     </param>
     <param>
       <key>bw0</key>
@@ -794,7 +905,7 @@
     </param>
     <param>
       <key>freq0</key>
-      <value>frequency</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>if_gain0</key>
@@ -802,7 +913,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>15</value>
+      <value>vga2_gain</value>
     </param>
     <param>
       <key>ant10</key>
@@ -1686,11 +1797,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 211)</value>
+      <value>(1056, 228)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1786,50 +1897,234 @@
     </param>
   </block>
   <block>
-    <key>trellis_encoder_xx</key>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>blocklength</key>
-      <value>0</value>
+      <key>average</key>
+      <value>0.2</value>
     </param>
     <param>
-      <key>blockwise</key>
-      <value>False</value>
+      <key>axislabels</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>bw</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>fc</key>
+      <value>center_freq</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>True</value>
     </param>
     <param>
-      <key>fsm_args</key>
-      <value>1, 2, (0171, 0133)</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(176, 227)</value>
+      <value>(864, 188)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>grid</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>id</key>
-      <value>trellis_encoder_xx_0</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>init_state</key>
-      <value>0</value>
+      <key>legend</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"dark blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1840,8 +2135,64 @@
       <value>0</value>
     </param>
     <param>
+      <key>name</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>type</key>
-      <value>bb</value>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Relative Gain</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+    <param>
+      <key>units</key>
+      <value>dB</value>
     </param>
   </block>
   <block>
@@ -1860,7 +2211,7 @@
     </param>
     <param>
       <key>center_freq0</key>
-      <value>uhd.tune_request(frequency, ((symbol_rate * 1.35) / 2 ) + 
1e5)</value>
+      <value>uhd.tune_request(center_freq, ((symbol_rate * 1.35) / 2 ) + 
1e5)</value>
     </param>
     <param>
       <key>norm_gain0</key>
@@ -1868,7 +2219,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>60</value>
+      <value>tx_gain</value>
     </param>
     <param>
       <key>ant10</key>
@@ -2512,11 +2863,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 403)</value>
+      <value>(1064, 392)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2643,6 +2994,10 @@
       <value>False</value>
     </param>
     <param>
+      <key>hide_lo_controls</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>stream_args</key>
       <value></value>
     </param>
@@ -2663,109 +3018,6 @@
       <value></value>
     </param>
   </block>
-  <block>
-    <key>wxgui_fftsink2</key>
-    <param>
-      <key>avg_alpha</key>
-      <value>0.13333</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>baseband_freq</key>
-      <value>frequency</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>fft_size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>freqvar</key>
-      <value>None</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(848, 195)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid_pos</key>
-      <value></value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>wxgui_fftsink2_0</value>
-    </param>
-    <param>
-      <key>notebook</key>
-      <value></value>
-    </param>
-    <param>
-      <key>peak_hold</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ref_level</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>ref_scale</key>
-      <value>2.0</value>
-    </param>
-    <param>
-      <key>fft_rate</key>
-      <value>15</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
-    </param>
-    <param>
-      <key>title</key>
-      <value>FFT Plot</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>win_size</key>
-      <value></value>
-    </param>
-    <param>
-      <key>win</key>
-      <value>None</value>
-    </param>
-    <param>
-      <key>y_divs</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>y_per_div</key>
-      <value>10</value>
-    </param>
-  </block>
   <connection>
     <source_block_id>blocks_file_source_0</source_block_id>
     <sink_block_id>dtv_dvbt_energy_dispersal_0</sink_block_id>
@@ -2773,24 +3025,12 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pack_k_bits_bb_0</source_block_id>
+    <source_block_id>blocks_vector_to_stream_0</source_block_id>
     <sink_block_id>dtv_dvbs2_modulator_bc_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_packed_to_unpacked_xx_0</source_block_id>
-    <sink_block_id>trellis_encoder_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_unpack_k_bits_bb_0</source_block_id>
-    <sink_block_id>fec_puncture_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
     <source_block_id>dtv_dvbs2_modulator_bc_0</source_block_id>
     <sink_block_id>fft_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
@@ -2798,7 +3038,7 @@
   </connection>
   <connection>
     <source_block_id>dtv_dvbt_convolutional_interleaver_0</source_block_id>
-    <sink_block_id>blocks_packed_to_unpacked_xx_0</sink_block_id>
+    <sink_block_id>dtv_dvbt_inner_coder_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -2809,14 +3049,14 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>dtv_dvbt_reed_solomon_enc_0</source_block_id>
-    <sink_block_id>dtv_dvbt_convolutional_interleaver_0</sink_block_id>
+    <source_block_id>dtv_dvbt_inner_coder_0</source_block_id>
+    <sink_block_id>blocks_vector_to_stream_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_puncture_xx_0</source_block_id>
-    <sink_block_id>blocks_pack_k_bits_bb_0</sink_block_id>
+    <source_block_id>dtv_dvbt_reed_solomon_enc_0</source_block_id>
+    <sink_block_id>dtv_dvbt_convolutional_interleaver_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -2834,19 +3074,13 @@
   </connection>
   <connection>
     <source_block_id>fft_filter_xxx_0</source_block_id>
-    <sink_block_id>uhd_usrp_sink_0_0</sink_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>fft_filter_xxx_0</source_block_id>
-    <sink_block_id>wxgui_fftsink2_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>trellis_encoder_xx_0</source_block_id>
-    <sink_block_id>blocks_unpack_k_bits_bb_0</sink_block_id>
+    <sink_block_id>uhd_usrp_sink_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-dtv/examples/dvbt_rx_8k.grc b/gr-dtv/examples/dvbt_rx_8k.grc
index b1a88a6..7db1aac 100644
--- a/gr-dtv/examples/dvbt_rx_8k.grc
+++ b/gr-dtv/examples/dvbt_rx_8k.grc
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<?grc format='1' created='3.7.9'?>
+<?grc format='1' created='3.7.11'?>
 <flow_graph>
   <timestamp>Thu Feb 13 17:44:54 2014</timestamp>
   <block>
@@ -9,10 +9,6 @@
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
       <key>window_size</key>
       <value>1280, 1024</value>
     </param>
@@ -45,6 +41,10 @@
       <value>qt_gui</value>
     </param>
     <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
       <key>id</key>
       <value>dvbt_rx_demo_8k</value>
     </param>
@@ -53,10 +53,18 @@
       <value>0</value>
     </param>
     <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
       <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
       <key>run_options</key>
       <value>prompt</value>
     </param>
@@ -85,6 +93,33 @@
     </param>
     <param>
       <key>_coordinate</key>
+      <value>(176, 12)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>429e6</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
       <value>(8, 75)</value>
     </param>
     <param>
@@ -128,7 +163,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1072, 499)</value>
+      <value>(1080, 484)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -175,7 +210,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(112, 75)</value>
+      <value>(128, 76)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -281,7 +316,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(968, 275)</value>
+      <value>(968, 284)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -383,7 +418,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(112, 371)</value>
+      <value>(144, 372)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -438,7 +473,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(360, 363)</value>
+      <value>(376, 364)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -493,7 +528,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(360, 499)</value>
+      <value>(360, 484)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -540,7 +575,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(920, 347)</value>
+      <value>(928, 352)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -607,7 +642,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(880, 19)</value>
+      <value>(896, 12)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -670,7 +705,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(864, 515)</value>
+      <value>(872, 500)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -717,7 +752,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(368, 59)</value>
+      <value>(368, 48)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -776,7 +811,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(632, 467)</value>
+      <value>(632, 456)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -843,7 +878,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(632, 363)</value>
+      <value>(640, 364)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -898,7 +933,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(80, 491)</value>
+      <value>(80, 480)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -953,7 +988,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(624, 51)</value>
+      <value>(640, 40)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -995,6 +1030,10 @@
       <value>True</value>
     </param>
     <param>
+      <key>axislabels</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
@@ -1012,7 +1051,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(680, 267)</value>
+      <value>(688, 276)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -1338,6 +1377,10 @@
       <value>True</value>
     </param>
     <param>
+      <key>axislabels</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
@@ -1682,7 +1725,11 @@
     </param>
     <param>
       <key>average</key>
-      <value>1.0</value>
+      <value>0.2</value>
+    </param>
+    <param>
+      <key>axislabels</key>
+      <value>True</value>
     </param>
     <param>
       <key>bw</key>
@@ -1694,7 +1741,7 @@
     </param>
     <param>
       <key>fc</key>
-      <value>429000000</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>comment</key>
@@ -1730,7 +1777,7 @@
     </param>
     <param>
       <key>grid</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
       <key>id</key>
@@ -1953,6 +2000,10 @@
       <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
+      <key>label</key>
+      <value>Relative Gain</value>
+    </param>
+    <param>
       <key>ymax</key>
       <value>-10</value>
     </param>
@@ -1960,6 +2011,10 @@
       <key>ymin</key>
       <value>-170</value>
     </param>
+    <param>
+      <key>units</key>
+      <value>dB</value>
+    </param>
   </block>
   <block>
     <key>uhd_usrp_source</key>
@@ -1977,7 +2032,15 @@
     </param>
     <param>
       <key>center_freq0</key>
-      <value>429000000</value>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>dc_offs_enb0</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb0</key>
+      <value>""</value>
     </param>
     <param>
       <key>norm_gain0</key>
@@ -1988,6 +2051,14 @@
       <value>30</value>
     </param>
     <param>
+      <key>lo_export0</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source0</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant10</key>
       <value></value>
     </param>
@@ -2000,6 +2071,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb10</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb10</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain10</key>
       <value>False</value>
     </param>
@@ -2008,6 +2087,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export10</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source10</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant11</key>
       <value></value>
     </param>
@@ -2020,6 +2107,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb11</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb11</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain11</key>
       <value>False</value>
     </param>
@@ -2028,6 +2123,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export11</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source11</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant12</key>
       <value></value>
     </param>
@@ -2040,6 +2143,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb12</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb12</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain12</key>
       <value>False</value>
     </param>
@@ -2048,6 +2159,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export12</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source12</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant13</key>
       <value></value>
     </param>
@@ -2060,6 +2179,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb13</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb13</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain13</key>
       <value>False</value>
     </param>
@@ -2068,6 +2195,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export13</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source13</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant14</key>
       <value></value>
     </param>
@@ -2080,6 +2215,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb14</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb14</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain14</key>
       <value>False</value>
     </param>
@@ -2088,6 +2231,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export14</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source14</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant15</key>
       <value></value>
     </param>
@@ -2100,6 +2251,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb15</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb15</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain15</key>
       <value>False</value>
     </param>
@@ -2108,6 +2267,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export15</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source15</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant16</key>
       <value></value>
     </param>
@@ -2120,6 +2287,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb16</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb16</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain16</key>
       <value>False</value>
     </param>
@@ -2128,6 +2303,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export16</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source16</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant17</key>
       <value></value>
     </param>
@@ -2140,6 +2323,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb17</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb17</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain17</key>
       <value>False</value>
     </param>
@@ -2148,6 +2339,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export17</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source17</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant18</key>
       <value></value>
     </param>
@@ -2160,6 +2359,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb18</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb18</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain18</key>
       <value>False</value>
     </param>
@@ -2168,6 +2375,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export18</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source18</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant19</key>
       <value></value>
     </param>
@@ -2180,6 +2395,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb19</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb19</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain19</key>
       <value>False</value>
     </param>
@@ -2188,6 +2411,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export19</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source19</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant1</key>
       <value></value>
     </param>
@@ -2200,6 +2431,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb1</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb1</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain1</key>
       <value>False</value>
     </param>
@@ -2208,6 +2447,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export1</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source1</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant20</key>
       <value></value>
     </param>
@@ -2220,6 +2467,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb20</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb20</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain20</key>
       <value>False</value>
     </param>
@@ -2228,6 +2483,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export20</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source20</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant21</key>
       <value></value>
     </param>
@@ -2240,6 +2503,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb21</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb21</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain21</key>
       <value>False</value>
     </param>
@@ -2248,6 +2519,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source21</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant22</key>
       <value></value>
     </param>
@@ -2260,6 +2539,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb22</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb22</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain22</key>
       <value>False</value>
     </param>
@@ -2268,6 +2555,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export22</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source22</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant23</key>
       <value></value>
     </param>
@@ -2280,6 +2575,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb23</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb23</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain23</key>
       <value>False</value>
     </param>
@@ -2288,6 +2591,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export23</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source23</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant24</key>
       <value></value>
     </param>
@@ -2300,6 +2611,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb24</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb24</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain24</key>
       <value>False</value>
     </param>
@@ -2308,6 +2627,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export24</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source24</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant25</key>
       <value></value>
     </param>
@@ -2320,6 +2647,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb25</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb25</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain25</key>
       <value>False</value>
     </param>
@@ -2328,6 +2663,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export25</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source25</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant26</key>
       <value></value>
     </param>
@@ -2340,6 +2683,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb26</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb26</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain26</key>
       <value>False</value>
     </param>
@@ -2348,6 +2699,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export26</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source26</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant27</key>
       <value></value>
     </param>
@@ -2360,6 +2719,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb27</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb27</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain27</key>
       <value>False</value>
     </param>
@@ -2368,6 +2735,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export27</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source27</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant28</key>
       <value></value>
     </param>
@@ -2380,6 +2755,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb28</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb28</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain28</key>
       <value>False</value>
     </param>
@@ -2388,6 +2771,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export28</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source28</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant29</key>
       <value></value>
     </param>
@@ -2400,6 +2791,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb29</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb29</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain29</key>
       <value>False</value>
     </param>
@@ -2408,6 +2807,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export29</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source29</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant2</key>
       <value></value>
     </param>
@@ -2420,6 +2827,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb2</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb2</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain2</key>
       <value>False</value>
     </param>
@@ -2428,6 +2843,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export2</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source2</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant30</key>
       <value></value>
     </param>
@@ -2440,6 +2863,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb30</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb30</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain30</key>
       <value>False</value>
     </param>
@@ -2448,6 +2879,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export30</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source30</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant31</key>
       <value></value>
     </param>
@@ -2460,6 +2899,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb31</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb31</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain31</key>
       <value>False</value>
     </param>
@@ -2468,6 +2915,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export31</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source31</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant3</key>
       <value></value>
     </param>
@@ -2480,6 +2935,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb3</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb3</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain3</key>
       <value>False</value>
     </param>
@@ -2488,6 +2951,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export3</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source3</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant4</key>
       <value></value>
     </param>
@@ -2500,6 +2971,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb4</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb4</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain4</key>
       <value>False</value>
     </param>
@@ -2508,6 +2987,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export4</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source4</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant5</key>
       <value></value>
     </param>
@@ -2520,6 +3007,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb5</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb5</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain5</key>
       <value>False</value>
     </param>
@@ -2528,6 +3023,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export5</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source5</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant6</key>
       <value></value>
     </param>
@@ -2540,6 +3043,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb6</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb6</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain6</key>
       <value>False</value>
     </param>
@@ -2548,6 +3059,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export6</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source6</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant7</key>
       <value></value>
     </param>
@@ -2560,6 +3079,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb7</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb7</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain7</key>
       <value>False</value>
     </param>
@@ -2568,6 +3095,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export7</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source7</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant8</key>
       <value></value>
     </param>
@@ -2580,6 +3115,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb8</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb8</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain8</key>
       <value>False</value>
     </param>
@@ -2588,6 +3131,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export8</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source8</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>ant9</key>
       <value></value>
     </param>
@@ -2600,6 +3151,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>dc_offs_enb9</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb9</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>norm_gain9</key>
       <value>False</value>
     </param>
@@ -2608,6 +3167,14 @@
       <value>0</value>
     </param>
     <param>
+      <key>lo_export9</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>lo_source9</key>
+      <value>internal</value>
+    </param>
+    <param>
       <key>clock_rate</key>
       <value>0.0</value>
     </param>
@@ -2633,7 +3200,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(48, 243)</value>
+      <value>(32, 240)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2764,6 +3331,14 @@
       <value>samp_rate</value>
     </param>
     <param>
+      <key>hide_cmd_port</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>hide_lo_controls</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>stream_args</key>
       <value></value>
     </param>
diff --git a/gr-dtv/examples/dvbt_tx_2k.grc b/gr-dtv/examples/dvbt_tx_2k.grc
index d570b66..b061fef 100644
--- a/gr-dtv/examples/dvbt_tx_2k.grc
+++ b/gr-dtv/examples/dvbt_tx_2k.grc
@@ -93,6 +93,33 @@
     </param>
     <param>
       <key>_coordinate</key>
+      <value>(176, 12)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>429e6</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
       <value>(8, 76)</value>
     </param>
     <param>
@@ -109,6 +136,195 @@
     </param>
   </block>
   <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>50</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(240, 496)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>89</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>-8</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 496)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>vga1_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>-35</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>-4</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>int</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(120, 496)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>vga2_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>25</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>int</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
     <key>blocks_file_source</key>
     <param>
       <key>alias</key>
@@ -128,7 +344,7 @@
     </param>
     <param>
       <key>file</key>
-      <value>/run/shm/advtest.ts</value>
+      <value>/run/shm/adv8dvbt23qam64.ts</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -187,7 +403,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(696, 388)</value>
+      <value>(696, 420)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -234,7 +450,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(120, 500)</value>
+      <value>(120, 332)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -293,7 +509,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(392, 368)</value>
+      <value>(392, 400)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -446,7 +662,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 72)</value>
+      <value>(352, 72)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -488,248 +704,1254 @@
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1032, 48)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>hierarchy</key>
+      <value>nh</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_inner_coder_0</value>
+    </param>
+    <param>
+      <key>ninput</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>noutput</key>
+      <value>1512</value>
+    </param>
+  </block>
+  <block>
+    <key>dtv_dvbt_map</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>constellation</key>
+      <value>64qam</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(368, 192)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>gain</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>hierarchy</key>
+      <value>nh</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_map_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>transmission_mode</key>
+      <value>T2k</value>
+    </param>
+  </block>
+  <block>
+    <key>dtv_dvbt_reed_solomon_enc</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>blocks</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>gfpoly</key>
+      <value>0x11d</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(544, 24)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_reed_solomon_enc_0</value>
+    </param>
+    <param>
+      <key>k</key>
+      <value>239</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>n</key>
+      <value>255</value>
+    </param>
+    <param>
+      <key>s</key>
+      <value>51</value>
+    </param>
+    <param>
+      <key>m</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>p</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>t</key>
+      <value>8</value>
+    </param>
+  </block>
+  <block>
+    <key>dtv_dvbt_reference_signals</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>cell_id</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>code_rate_hp</key>
+      <value>C2_3</value>
+    </param>
+    <param>
+      <key>code_rate_lp</key>
+      <value>C2_3</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>constellation</key>
+      <value>64qam</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(48, 156)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>guard_interval</key>
+      <value>GI_1_32</value>
+    </param>
+    <param>
+      <key>hierarchy</key>
+      <value>nh</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_reference_signals_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>include_cell_id</key>
+      <value>call_id_yes</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>transmission_mode</key>
+      <value>T2k</value>
+    </param>
+  </block>
+  <block>
+    <key>dtv_dvbt_symbol_inner_interleaver</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>direction</key>
+      <value>Interleave</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(672, 204)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_symbol_inner_interleaver_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>transmission_mode</key>
+      <value>T2k</value>
+    </param>
+  </block>
+  <block>
+    <key>fft_vxx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>fft_size</key>
+      <value>2048</value>
+    </param>
+    <param>
+      <key>forward</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(88, 392)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fft_vxx_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>nthreads</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>shift</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>window</key>
+      <value>window.rectangular(2048)</value>
+    </param>
+  </block>
+  <block>
+    <key>osmosdr_sink</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ant0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain0</key>
+      <value>vga1_gain</value>
+    </param>
+    <param>
+      <key>bw0</key>
+      <value>8750000</value>
+    </param>
+    <param>
+      <key>corr0</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq0</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>if_gain0</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>gain0</key>
+      <value>vga2_gain</value>
+    </param>
+    <param>
+      <key>ant10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain10</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq10</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain10</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain10</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant11</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain11</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq11</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain11</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain11</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant12</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain12</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq12</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain12</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain12</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant13</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain13</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq13</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain13</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain13</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant14</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain14</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq14</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain14</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain14</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant15</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain15</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq15</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain15</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain15</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant16</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain16</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq16</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain16</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain16</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant17</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain17</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq17</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain17</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain17</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant18</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain18</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq18</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain18</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain18</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant19</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain19</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq19</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain19</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain19</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain1</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq1</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain1</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain1</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant20</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain20</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq20</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain20</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain20</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant21</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain21</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq21</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain21</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain21</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant22</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain22</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq22</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain22</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain22</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant23</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain23</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq23</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain23</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain23</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant24</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain24</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq24</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain24</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain24</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant25</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain25</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq25</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain25</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain25</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant26</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain26</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq26</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain26</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain26</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant27</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain27</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq27</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain27</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain27</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant28</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain28</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq28</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain28</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain28</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant29</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain29</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq29</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain29</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain29</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain2</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq2</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain2</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain2</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant30</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain30</key>
+      <value>20</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1032, 48)</value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>corr30</key>
       <value>0</value>
     </param>
     <param>
-      <key>hierarchy</key>
-      <value>nh</value>
+      <key>freq30</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>id</key>
-      <value>dtv_dvbt_inner_coder_0</value>
+      <key>if_gain30</key>
+      <value>20</value>
     </param>
     <param>
-      <key>ninput</key>
-      <value>1</value>
+      <key>gain30</key>
+      <value>10</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>ant31</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain31</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw31</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>corr31</key>
       <value>0</value>
     </param>
     <param>
-      <key>noutput</key>
-      <value>1512</value>
+      <key>freq31</key>
+      <value>100e6</value>
     </param>
-  </block>
-  <block>
-    <key>dtv_dvbt_map</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>if_gain31</key>
+      <value>20</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>gain31</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant3</key>
       <value></value>
     </param>
     <param>
-      <key>constellation</key>
-      <value>64qam</value>
+      <key>bb_gain3</key>
+      <value>20</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>corr3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(368, 192)</value>
+      <key>freq3</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>if_gain3</key>
+      <value>20</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>1</value>
+      <key>gain3</key>
+      <value>10</value>
     </param>
     <param>
-      <key>hierarchy</key>
-      <value>nh</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>id</key>
-      <value>dtv_dvbt_map_0</value>
+      <key>bb_gain4</key>
+      <value>20</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>bw4</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>corr4</key>
       <value>0</value>
     </param>
     <param>
-      <key>transmission_mode</key>
-      <value>T2k</value>
+      <key>freq4</key>
+      <value>100e6</value>
     </param>
-  </block>
-  <block>
-    <key>dtv_dvbt_reed_solomon_enc</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>if_gain4</key>
+      <value>20</value>
     </param>
     <param>
-      <key>blocks</key>
-      <value>8</value>
+      <key>gain4</key>
+      <value>10</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant5</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bb_gain5</key>
+      <value>20</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gfpoly</key>
-      <value>0x11d</value>
+      <key>corr5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(536, 24)</value>
+      <key>freq5</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>if_gain5</key>
+      <value>20</value>
     </param>
     <param>
-      <key>id</key>
-      <value>dtv_dvbt_reed_solomon_enc_0</value>
+      <key>gain5</key>
+      <value>10</value>
     </param>
     <param>
-      <key>k</key>
-      <value>239</value>
+      <key>ant6</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>bb_gain6</key>
+      <value>20</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw6</key>
       <value>0</value>
     </param>
     <param>
-      <key>n</key>
-      <value>255</value>
+      <key>corr6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>s</key>
-      <value>51</value>
+      <key>freq6</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>m</key>
-      <value>8</value>
+      <key>if_gain6</key>
+      <value>20</value>
     </param>
     <param>
-      <key>p</key>
-      <value>2</value>
+      <key>gain6</key>
+      <value>10</value>
     </param>
     <param>
-      <key>t</key>
-      <value>8</value>
+      <key>ant7</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>dtv_dvbt_reference_signals</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>bb_gain7</key>
+      <value>20</value>
     </param>
     <param>
-      <key>cell_id</key>
+      <key>bw7</key>
       <value>0</value>
     </param>
     <param>
-      <key>code_rate_hp</key>
-      <value>C2_3</value>
+      <key>corr7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>code_rate_lp</key>
-      <value>C2_3</value>
+      <key>freq7</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>if_gain7</key>
+      <value>20</value>
     </param>
     <param>
-      <key>constellation</key>
-      <value>64qam</value>
+      <key>gain7</key>
+      <value>10</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant8</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bb_gain8</key>
+      <value>20</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(48, 156)</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>corr8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>guard_interval</key>
-      <value>GI_1_32</value>
+      <key>freq8</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>hierarchy</key>
-      <value>nh</value>
+      <key>if_gain8</key>
+      <value>20</value>
     </param>
     <param>
-      <key>id</key>
-      <value>dtv_dvbt_reference_signals_0</value>
+      <key>gain8</key>
+      <value>10</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>include_cell_id</key>
-      <value>call_id_yes</value>
+      <key>bb_gain9</key>
+      <value>20</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>bw9</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>corr9</key>
       <value>0</value>
     </param>
     <param>
-      <key>transmission_mode</key>
-      <value>T2k</value>
+      <key>freq9</key>
+      <value>100e6</value>
     </param>
-  </block>
-  <block>
-    <key>dtv_dvbt_symbol_inner_interleaver</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>if_gain9</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain9</key>
+      <value>10</value>
     </param>
     <param>
       <key>comment</key>
@@ -740,99 +1962,108 @@
       <value></value>
     </param>
     <param>
-      <key>direction</key>
-      <value>Interleave</value>
+      <key>args</key>
+      <value>bladerf=0,buffers=128,buflen=32768</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(672, 204)</value>
+      <value>(984, 284)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>id</key>
-      <value>dtv_dvbt_symbol_inner_interleaver_0</value>
+      <value>osmosdr_sink_0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>clock_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>transmission_mode</key>
-      <value>T2k</value>
+      <key>time_source0</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>fft_vxx</key>
     <param>
-      <key>alias</key>
+      <key>clock_source1</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>time_source1</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>clock_source2</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>fft_size</key>
-      <value>2048</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>forward</key>
-      <value>False</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(88, 360)</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>id</key>
-      <value>fft_vxx_0</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>nthreads</key>
+      <key>clock_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>nchan</key>
       <value>1</value>
     </param>
     <param>
-      <key>shift</key>
-      <value>True</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>window</key>
-      <value>window.rectangular(2048)</value>
+      <key>sample_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>sync</key>
+      <value></value>
     </param>
   </block>
   <block>
@@ -863,7 +2094,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(360, 492)</value>
+      <value>(360, 324)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -1198,7 +2429,7 @@
     </param>
     <param>
       <key>center_freq0</key>
-      <value>429000000</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>norm_gain0</key>
@@ -1206,7 +2437,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>50</value>
+      <value>tx_gain</value>
     </param>
     <param>
       <key>ant10</key>
@@ -1850,11 +3081,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(984, 344)</value>
+      <value>(992, 448)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2013,6 +3244,12 @@
   </connection>
   <connection>
     <source_block_id>blocks_multiply_const_xx_0</source_block_id>
+    <sink_block_id>osmosdr_sink_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_multiply_const_xx_0</source_block_id>
     <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
diff --git a/gr-dtv/examples/dvbt_tx_8k.grc b/gr-dtv/examples/dvbt_tx_8k.grc
index 9c5cc32..f674035 100644
--- a/gr-dtv/examples/dvbt_tx_8k.grc
+++ b/gr-dtv/examples/dvbt_tx_8k.grc
@@ -93,6 +93,33 @@
     </param>
     <param>
       <key>_coordinate</key>
+      <value>(176, 12)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>429e6</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
       <value>(8, 76)</value>
     </param>
     <param>
@@ -109,6 +136,195 @@
     </param>
   </block>
   <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>50</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(240, 496)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>89</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>-8</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 496)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>vga1_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>-35</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>-4</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>int</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(120, 496)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>vga2_gain</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value></value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>25</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>int</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
     <key>blocks_file_source</key>
     <param>
       <key>alias</key>
@@ -128,7 +344,7 @@
     </param>
     <param>
       <key>file</key>
-      <value>/run/shm/advtest.ts</value>
+      <value>/run/shm/adv8dvbt23qam64.ts</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -187,7 +403,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(696, 388)</value>
+      <value>(696, 420)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -234,7 +450,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(120, 500)</value>
+      <value>(120, 332)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -293,7 +509,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(392, 368)</value>
+      <value>(392, 400)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -446,7 +662,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 72)</value>
+      <value>(352, 72)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -488,248 +704,1254 @@
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1032, 48)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>hierarchy</key>
+      <value>nh</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_inner_coder_0</value>
+    </param>
+    <param>
+      <key>ninput</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>noutput</key>
+      <value>6048</value>
+    </param>
+  </block>
+  <block>
+    <key>dtv_dvbt_map</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>constellation</key>
+      <value>64qam</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(368, 192)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>gain</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>hierarchy</key>
+      <value>nh</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_map_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>transmission_mode</key>
+      <value>T8k</value>
+    </param>
+  </block>
+  <block>
+    <key>dtv_dvbt_reed_solomon_enc</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>blocks</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>gfpoly</key>
+      <value>0x11d</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(544, 24)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_reed_solomon_enc_0</value>
+    </param>
+    <param>
+      <key>k</key>
+      <value>239</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>n</key>
+      <value>255</value>
+    </param>
+    <param>
+      <key>s</key>
+      <value>51</value>
+    </param>
+    <param>
+      <key>m</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>p</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>t</key>
+      <value>8</value>
+    </param>
+  </block>
+  <block>
+    <key>dtv_dvbt_reference_signals</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>cell_id</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>code_rate_hp</key>
+      <value>C2_3</value>
+    </param>
+    <param>
+      <key>code_rate_lp</key>
+      <value>C2_3</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>constellation</key>
+      <value>64qam</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(48, 156)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>guard_interval</key>
+      <value>GI_1_32</value>
+    </param>
+    <param>
+      <key>hierarchy</key>
+      <value>nh</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_reference_signals_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>include_cell_id</key>
+      <value>call_id_yes</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>transmission_mode</key>
+      <value>T8k</value>
+    </param>
+  </block>
+  <block>
+    <key>dtv_dvbt_symbol_inner_interleaver</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>direction</key>
+      <value>Interleave</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(672, 204)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dtv_dvbt_symbol_inner_interleaver_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>transmission_mode</key>
+      <value>T8k</value>
+    </param>
+  </block>
+  <block>
+    <key>fft_vxx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>fft_size</key>
+      <value>8192</value>
+    </param>
+    <param>
+      <key>forward</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(88, 392)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fft_vxx_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>nthreads</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>shift</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>window</key>
+      <value>window.rectangular(8192)</value>
+    </param>
+  </block>
+  <block>
+    <key>osmosdr_sink</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ant0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain0</key>
+      <value>vga1_gain</value>
+    </param>
+    <param>
+      <key>bw0</key>
+      <value>8750000</value>
+    </param>
+    <param>
+      <key>corr0</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq0</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>if_gain0</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>gain0</key>
+      <value>vga2_gain</value>
+    </param>
+    <param>
+      <key>ant10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain10</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq10</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain10</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain10</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant11</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain11</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq11</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain11</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain11</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant12</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain12</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq12</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain12</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain12</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant13</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain13</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq13</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain13</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain13</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant14</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain14</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq14</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain14</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain14</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant15</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain15</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq15</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain15</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain15</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant16</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain16</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq16</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain16</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain16</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant17</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain17</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq17</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain17</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain17</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant18</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain18</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq18</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain18</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain18</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant19</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain19</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq19</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain19</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain19</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain1</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq1</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain1</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain1</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant20</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain20</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq20</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain20</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain20</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant21</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain21</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq21</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain21</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain21</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant22</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain22</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq22</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain22</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain22</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant23</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain23</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq23</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain23</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain23</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant24</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain24</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq24</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain24</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain24</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant25</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain25</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq25</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain25</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain25</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant26</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain26</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq26</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain26</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain26</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant27</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain27</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq27</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain27</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain27</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant28</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain28</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq28</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain28</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain28</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant29</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain29</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq29</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain29</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain29</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain2</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>corr2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>freq2</key>
+      <value>100e6</value>
+    </param>
+    <param>
+      <key>if_gain2</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain2</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant30</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain30</key>
+      <value>20</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1032, 48)</value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>corr30</key>
       <value>0</value>
     </param>
     <param>
-      <key>hierarchy</key>
-      <value>nh</value>
+      <key>freq30</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>id</key>
-      <value>dtv_dvbt_inner_coder_0</value>
+      <key>if_gain30</key>
+      <value>20</value>
     </param>
     <param>
-      <key>ninput</key>
-      <value>1</value>
+      <key>gain30</key>
+      <value>10</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>ant31</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bb_gain31</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>bw31</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>corr31</key>
       <value>0</value>
     </param>
     <param>
-      <key>noutput</key>
-      <value>6048</value>
+      <key>freq31</key>
+      <value>100e6</value>
     </param>
-  </block>
-  <block>
-    <key>dtv_dvbt_map</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>if_gain31</key>
+      <value>20</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>gain31</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ant3</key>
       <value></value>
     </param>
     <param>
-      <key>constellation</key>
-      <value>64qam</value>
+      <key>bb_gain3</key>
+      <value>20</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>corr3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(368, 192)</value>
+      <key>freq3</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>if_gain3</key>
+      <value>20</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>1</value>
+      <key>gain3</key>
+      <value>10</value>
     </param>
     <param>
-      <key>hierarchy</key>
-      <value>nh</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>id</key>
-      <value>dtv_dvbt_map_0</value>
+      <key>bb_gain4</key>
+      <value>20</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>bw4</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>corr4</key>
       <value>0</value>
     </param>
     <param>
-      <key>transmission_mode</key>
-      <value>T8k</value>
+      <key>freq4</key>
+      <value>100e6</value>
     </param>
-  </block>
-  <block>
-    <key>dtv_dvbt_reed_solomon_enc</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>if_gain4</key>
+      <value>20</value>
     </param>
     <param>
-      <key>blocks</key>
-      <value>8</value>
+      <key>gain4</key>
+      <value>10</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant5</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bb_gain5</key>
+      <value>20</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gfpoly</key>
-      <value>0x11d</value>
+      <key>corr5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(536, 24)</value>
+      <key>freq5</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>if_gain5</key>
+      <value>20</value>
     </param>
     <param>
-      <key>id</key>
-      <value>dtv_dvbt_reed_solomon_enc_0</value>
+      <key>gain5</key>
+      <value>10</value>
     </param>
     <param>
-      <key>k</key>
-      <value>239</value>
+      <key>ant6</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>bb_gain6</key>
+      <value>20</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw6</key>
       <value>0</value>
     </param>
     <param>
-      <key>n</key>
-      <value>255</value>
+      <key>corr6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>s</key>
-      <value>51</value>
+      <key>freq6</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>m</key>
-      <value>8</value>
+      <key>if_gain6</key>
+      <value>20</value>
     </param>
     <param>
-      <key>p</key>
-      <value>2</value>
+      <key>gain6</key>
+      <value>10</value>
     </param>
     <param>
-      <key>t</key>
-      <value>8</value>
+      <key>ant7</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>dtv_dvbt_reference_signals</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>bb_gain7</key>
+      <value>20</value>
     </param>
     <param>
-      <key>cell_id</key>
+      <key>bw7</key>
       <value>0</value>
     </param>
     <param>
-      <key>code_rate_hp</key>
-      <value>C2_3</value>
+      <key>corr7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>code_rate_lp</key>
-      <value>C2_3</value>
+      <key>freq7</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>if_gain7</key>
+      <value>20</value>
     </param>
     <param>
-      <key>constellation</key>
-      <value>64qam</value>
+      <key>gain7</key>
+      <value>10</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant8</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bb_gain8</key>
+      <value>20</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(48, 156)</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>corr8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>guard_interval</key>
-      <value>GI_1_32</value>
+      <key>freq8</key>
+      <value>100e6</value>
     </param>
     <param>
-      <key>hierarchy</key>
-      <value>nh</value>
+      <key>if_gain8</key>
+      <value>20</value>
     </param>
     <param>
-      <key>id</key>
-      <value>dtv_dvbt_reference_signals_0</value>
+      <key>gain8</key>
+      <value>10</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>include_cell_id</key>
-      <value>call_id_yes</value>
+      <key>bb_gain9</key>
+      <value>20</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>bw9</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>corr9</key>
       <value>0</value>
     </param>
     <param>
-      <key>transmission_mode</key>
-      <value>T8k</value>
+      <key>freq9</key>
+      <value>100e6</value>
     </param>
-  </block>
-  <block>
-    <key>dtv_dvbt_symbol_inner_interleaver</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>if_gain9</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>gain9</key>
+      <value>10</value>
     </param>
     <param>
       <key>comment</key>
@@ -740,99 +1962,108 @@
       <value></value>
     </param>
     <param>
-      <key>direction</key>
-      <value>Interleave</value>
+      <key>args</key>
+      <value>bladerf=0,buffers=128,buflen=32768</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(672, 204)</value>
+      <value>(984, 284)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>id</key>
-      <value>dtv_dvbt_symbol_inner_interleaver_0</value>
+      <value>osmosdr_sink_0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>clock_source0</key>
+      <value></value>
     </param>
     <param>
-      <key>transmission_mode</key>
-      <value>T8k</value>
+      <key>time_source0</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>fft_vxx</key>
     <param>
-      <key>alias</key>
+      <key>clock_source1</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>time_source1</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>clock_source2</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>fft_size</key>
-      <value>8192</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>forward</key>
-      <value>False</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(88, 360)</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>id</key>
-      <value>fft_vxx_0</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>nthreads</key>
+      <key>clock_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>nchan</key>
       <value>1</value>
     </param>
     <param>
-      <key>shift</key>
-      <value>True</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>window</key>
-      <value>window.rectangular(8192)</value>
+      <key>sample_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>sync</key>
+      <value></value>
     </param>
   </block>
   <block>
@@ -863,7 +2094,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(360, 492)</value>
+      <value>(360, 324)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -1198,7 +2429,7 @@
     </param>
     <param>
       <key>center_freq0</key>
-      <value>429000000</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>norm_gain0</key>
@@ -1206,7 +2437,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>50</value>
+      <value>tx_gain</value>
     </param>
     <param>
       <key>ant10</key>
@@ -1850,11 +3081,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(984, 344)</value>
+      <value>(992, 448)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2013,6 +3244,12 @@
   </connection>
   <connection>
     <source_block_id>blocks_multiply_const_xx_0</source_block_id>
+    <sink_block_id>osmosdr_sink_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_multiply_const_xx_0</source_block_id>
     <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
diff --git a/gr-dtv/examples/uhd_atsc_tx.grc b/gr-dtv/examples/uhd_atsc_tx.grc
index 24b451e..7fe55eb 100644
--- a/gr-dtv/examples/uhd_atsc_tx.grc
+++ b/gr-dtv/examples/uhd_atsc_tx.grc
@@ -371,7 +371,7 @@
     </param>
     <param>
       <key>file</key>
-      <value>advatsc.ts</value>
+      <value>/run/shm/advatsc.ts</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -1858,7 +1858,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -2280,7 +2280,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>50</value>
+      <value>tx_gain</value>
     </param>
     <param>
       <key>ant10</key>
@@ -2924,7 +2924,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
diff --git a/gr-dtv/examples/vv003-cr23.grc b/gr-dtv/examples/vv003-cr23.grc
index 1b92b01..4e3df5a 100644
--- a/gr-dtv/examples/vv003-cr23.grc
+++ b/gr-dtv/examples/vv003-cr23.grc
@@ -38,7 +38,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>wx_gui</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>hier_block_src_path</key>
@@ -93,6 +93,33 @@
     </param>
     <param>
       <key>_coordinate</key>
+      <value>(176, 12)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>429e6</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
       <value>(8, 75)</value>
     </param>
     <param>
@@ -1189,7 +1216,7 @@
     </param>
     <param>
       <key>freq0</key>
-      <value>429e6</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>if_gain0</key>
@@ -1197,7 +1224,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>18</value>
+      <value>10</value>
     </param>
     <param>
       <key>ant10</key>
diff --git a/gr-dtv/examples/vv009-4kfft.grc b/gr-dtv/examples/vv009-4kfft.grc
index dfc9350..cd8b247 100644
--- a/gr-dtv/examples/vv009-4kfft.grc
+++ b/gr-dtv/examples/vv009-4kfft.grc
@@ -38,7 +38,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>wx_gui</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>hier_block_src_path</key>
@@ -93,6 +93,33 @@
     </param>
     <param>
       <key>_coordinate</key>
+      <value>(176, 12)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>429e6</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
       <value>(8, 75)</value>
     </param>
     <param>
@@ -1189,7 +1216,7 @@
     </param>
     <param>
       <key>freq0</key>
-      <value>429e6</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>if_gain0</key>
@@ -1197,7 +1224,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>18</value>
+      <value>10</value>
     </param>
     <param>
       <key>ant10</key>
diff --git a/gr-dtv/examples/vv018-miso.grc b/gr-dtv/examples/vv018-miso.grc
index 880e1fc..f3434a5 100644
--- a/gr-dtv/examples/vv018-miso.grc
+++ b/gr-dtv/examples/vv018-miso.grc
@@ -38,7 +38,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>wx_gui</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>hier_block_src_path</key>
@@ -93,6 +93,33 @@
     </param>
     <param>
       <key>_coordinate</key>
+      <value>(176, 12)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>center_freq</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>429e6</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
       <value>(8, 75)</value>
     </param>
     <param>
@@ -1583,7 +1610,7 @@
     </param>
     <param>
       <key>freq0</key>
-      <value>429e6</value>
+      <value>center_freq</value>
     </param>
     <param>
       <key>if_gain0</key>
@@ -1591,7 +1618,7 @@
     </param>
     <param>
       <key>gain0</key>
-      <value>18</value>
+      <value>10</value>
     </param>
     <param>
       <key>ant10</key>



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